<template>
	<div class="list" ref="wrapper">
		<div>
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">{{this.currentCity}}</div>
					</div>
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div 
						class="button-wrapper" 
						v-for="item of hot" 
						:key="item.id"
						@click="handleCityClick(item.name)"
					>
						<div class="button">{{ item.name }}</div>
					</div>
				</div>
			</div>
			<div 
				class="area" 
				v-for="(item,key) of cities" 
				:key="key"
				:ref="key"
			>
				<div class="title border-topbottom" >{{ key }}</div>
				<div class="item-list">
					<div 
						class="item border-bottom" 
						v-for="innerItem of item" 
						:key="innerItem.id"
						@click="handleCityClick(innerItem.name)"
					>
						{{innerItem.name}}
					</div>
				</div>
			</div>
			
		</div>
	</div>
</template>

<script>
	import Bscroll from 'better-scroll'
	import { mapState,mapMutations } from 'vuex'
	export default {
		name :'CityList',
		props: {
			hot: Array,
			cities: Object,
			letter: String
		},
		methods: {
			handleCityClick (city) {
				/*this.$store.commit('changeCity',city)*/
				this.changeCity(city)
				this.$router.push('/')
			},
			...mapMutations (['changeCity'])
		},
		computed: {
			...mapState ({
				currentCity:'city'
			})
		},
		watch: {
			letter () {
				if(this.letter){
					const element = this.$refs[this.letter][0]
					this.scroll.scrollToElement(element)
				}
			}
		},
		mounted () {
			this.scroll = new Bscroll(this.$refs.wrapper)
		}
	}
</script>

<style lang="stylus" scoped>
	@import '~styles/varibles.styl'
	.border-topbottom
		&:before
			border-color: #ccc
		&:after
			border-color: #ccc
	.border-bottom
		&:before
			border-color: #ccc
	.list
		overflow:hidden
		position:absolute
		top:1.58rem
		left:0
		right:0
		bottom:0
		.title
			line-height: .54rem
			background: #eee
			padding-left: .2rem
			color:#666
			font-size: .26rem
		.button-list
			padding: .1rem .6rem .1rem .1rem
			overflow:hidden
			.button-wrapper
				float:left
				width: 33.33%
				.button
					text-align:center
					margin: .1rem
					padding:.1rem 0
					border:.02rem solid #ccc
					border-radius: .06rem
		.item-list
			.item
				line-height:.76rem
				padding-left:.2rem
				
</style>